Lace-tipping machine



A. SCHMALZQ LACE TIPPING MACHINE.

APPLICATION FILED MA'Y29.1919.

1,371,265, Patented Mar. 15, 1921.

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UNITED STATES A PATENT OFFICE.

ALBAN SCHMALZ, OF CHICAGO, ILLINOIS.

LACE-TIPPING MACHINE.

Application filed May 29,

To all whom it may concern:

Be it known that I, ALBAN SoHMALz, a citizen of the Republic of Brazil, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Lace-Tipping Machines, of which the following is a specification.

My invention relatesto lace tipping machines and has for its primary object the provision of an improved machine of this class especially adapted for tipping laces with tips formed from the blanks. It is one of the objects of the present invention to provide a machine adapted to handle a blank whose width is'greater than the circumference of the finished lace tip and, a machine which, in forming the tip, shall make the latter substantially cylindrical and at the same time project diametrically inward the extra width of said blank so that this latter portion of the metal shall enter the fabric of the tightly compressed lace. A further object is the provision in a machine of this class of an improved form of cutter whereby blanks may be trimmed of rough edges or to alter their length for instance. Another object of the invention lies in the provision of improved guiding means between cooperating' pressure and thrust blocks in a machine of this class.

Other objects and advantages of the present invention will appear from the following description, taken in conjunction with the accompanying drawings which form a part of this specification and illustrate the preferred embodiment of this invention.

In the drawings:

Figure 1 is a top plan view of the invention' Fig. 2 is a side elevation thereof illustrating in dotted lines a blank in position to be formed into a lace tip;

Fig. 3 is a section approximately on line 3-3 of Fig. 1;

Fig. 4 is a view in perspective of the blank preferably employed in the present invention;

Fig. 5 is a fragmentary View of a lace end showing the same tipped by the present invention and with the blank illustrated in Fi 4; and

Fig. 6 is a section taken on line 6-6 of Fig. 5.

1 pair of crossed handles 11 and 12 are pivoted at 13 in the ordinary manner. A

Specification of Letters lfatent. Patented Mar, 15, 1921.

1919. Serial No. 800,718.

spring 14 acts normally to hold the handles apart.

Pivoted as at 15 to the working end 16 of handle 11 and at a given distance from the pivot bolt 13 is a pressing head 17 deeply recessed as at 18 to receive and guide the guide block 19 formed on a thrust head 21 which is pivoted as at 22 to the working end 23 of handle 12; pivots l5 and 22 being equidistant from the handle pivot 13.

A horizontal surface 24 is formed on the upper side of the guide block 19 and forms a platen on which rests the blank 25 which is to be used in tipping the lace. Surface 24 is cylindrically up-turned at its left end to constitute a forming die 26 which terminates upwardly in a sharp edge 7 i 27 presented toward the pressing head 17. To the left from edge 27 the metal of the guide block is cut to form a horizontal surface 28 over which slides, when the machine is in operation, the horizontal lower surface 29 of a die jaw 31, surface 29 being cylindrically downturned to constitute a forming die 32, companion to die 26, and terminating in a sharp edge 3-3 which glides upon the platen 24. From its right end inwardly the guideblock 19 is apertured for sliding engagement by guide post 34 integral with pressing head 17, the function of this guide post being to maintain guide block 19 in true alinement with slot 18 of the pressing head. Also, should the pivot pins 15 and 22 become considerably worn, guide post 34 will maintain the horizontal alinement necessary to keep the forming dies 26 and 32 absolutely parallel.

The tip blank 25 may be of any desired length, its width however being greater than the circumference of the shoe lace to be tipped when the latter is tightly compressed. The back edge 35 of the blank is straight and unbroken, while its forward edge 'is serrated as at 36 and upturned in order that the teeth may, in the manner illustrated in Fig. 6, enter the fabric of the tipped lace. The blank so formed is, in the normal or open position of the machine, laid flatwise on platen 24, the teeth 36 being positioned in die 32 and projecting upwardly from platen 24. In the open position of the maproach die 26. The result is that the straight back edge 35 of the blank seats itself in the deepest portion of die 26, while the toothed edge opposite, being already upbent, slides upwardly in die .32 and then turns downwardly from surface 29 into the fabric of the lace. The continued approach toward each other of the dies curls the blank into a cylinder, the last part of this curling action occurring after surface 29 has glided upon surface 28, so that, the lace end blank being completely inclosed in the metal of the machine, the edge 35 of the blank slides upwardly in die 26 and is firmly pressed against the opposite edge of f the lace'tip formed where the blank (see end' 2301? handle 12. A shear plate 42,

' adapted to cooperate with cutter plate 38,

is pivotally mounted upon pin 41 and has its lower bifurcated-end 43 positioned astride of the pivot bolt -13.' In the normal open position of the handles plates 38 and 42 are separated in the manner of a pair of shears as illustrated in Figs. 2 and 3. Upon drawing handles 11 and 12 toward each other, however, plate 42 is rocked in a clockwise direction about pin 41 while plate 38 is rocked in the opposite direction about pivot 22 thus causing a shearing action between the plates; during this shearing action the rocking of plate 38 and thrust head 21 about pivot 22 is accomplished and limited by the engagement between the thrust head 21 and pressing head 17. The handles 11 and 12 are, by this construction, caused to exert great leverage on the plates 38 and 42 so thatfthese plates are serviceable for the I wish therefore not to be .restricted to this precise embodiment, except so far as the same is limited in the appended claims.

I claim:

1. Ina lace tipping machine, the combination with a pair of crossed] handles pivoted together, of a forming die pivoted to one of said handles and having a lower portion extended toward the opposite handle to form a work supporting platen, a

companion forming die'pivoted to said opposite handle, and having a work inclosing projection extending from the upper portion of said companion forming die above said platen and toward said first named die and telescopic means carried by the dies respectively for insuring a right line travel of said dies toward each other upon pivotal movement oi said handles.

.2. In a lace tipping machine, the combination with a pair of pivoted crossed handles, of a die carrying thrust head pivoted .toone of saidhandles, a guide blockproecting from the thrust head toward the op positehandle, a pressing head pivoted upon said opposite handle and provided with a 1 recess formed to receive and guide said guide block, :and a guide post projecting from the pressing head into said recess and slidably engaging a bore provided in said guide block.

In testimony whereof I have affixed my signature. 7

ALBAN SCHMATJZ. 

